skinflint (n.)youdaoicibaDictYouDict[skinflint 词源字典]
"miser, one who makes use of contemptible economy to keep money," 1700, slang; literally "kind of person who would skin a flint to save or gain something," from skin (v.) + flint. Flay-flint in same sense is from 1670s.[skinflint etymology, skinflint origin, 英语词源]